Grassy @ss - I'll load up a few lots from a grain less to a grain more, and see which one does best in my rifle. I will, of course, check the Sierra manual before loading any of it - just in case, you know - but thanks for the info. It should save me a bunch of time in load development.
I'll let you know in about a week or so how I did. I won't be shooting that this weekend, but next weekend is another story.